EXPERIMENTAL GUARDRAIL POSTS, FINAL REPORT ON A METHOD OF REDUCING POST CHECKING

IN ITS EFFORT TO REDUCE THE JOBSITE REJECTION RATE FOR SQUARE SAWED WOODEN GUARDRAIL POSTS DUE TO WEATHER CHECKING, THE OREGON STATE HIGHWAY DEPARTMENT FOUND THAT THE AMOUNT OF WEATHERING CRACKS THAT PENETRATED THE CREOSOTE TREATMENT LAYER COULD BE SUBSTANTIALLY REDUCED BY CUTTING LONGITUDINAL SAW KERFS IN THE POSTS PRIOR TO THE CREOSOTE TREATMENT PROCESSES. THREE DIFFERENT PATTERNS OF SAW WERE USED AT TWO LOCATIONS ALONG WITH A SET OF UNSAWED POSTS THAT SERVED AS A CONTROL. WHILE ALL OF THE SAW CUT PATTERNS SHOWED SOME IMPROVEMENT OVER THE UNSAWED POSTS,THE ONE USING THE DEEPEST SINGLE CUT ALONG THE MIDLINE OF ONE FACE SEEMED TO YIELD THE MOST BENEFIT. /BPR/

• Supplemental Notes:
  • Hpr-1 (6), ITEM 16
• Corporate Authors:

  Oregon Department of Transportation

  Highway Division, 325 13th Street, NE, Room 605
  Salem, OR  United States  97310

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • White, O A
  • Stoltenberg, C H
  • Chandler, C R
• Publication Date: 1968-10

Subject/Index Terms

• TRT Terms: Creosote; Excavations; Experiments; Guardrails; Posts; Sawing; Vertical supports; Weathering; Wood; Wood preservatives
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215896
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Mar 18 1994 12:00AM